Implicit Promises and the Timing of Defined‐Benefit Pension Plan Freezes
Financial Management, EarlyView.ABSTRACT Firms time defined‐benefit (DB) plan freezes after CEO turnovers to protect CEO retirement benefits from cost cuts affecting the wider workforce. We document a significant increase in voluntary CEO turnovers just before the freeze, without notable post‐freeze changes.
Zacharias Petrou, Adamos Vlittis
wiley +1 more source
An Economic Analysis of Difficulty Adjustment Algorithms in Proof‐of‐Work Blockchain Systems
International Economic Review, EarlyView.ABSTRACT We study the stability of cryptocurrency systems through difficulty adjustment. Bitcoin's difficulty adjustment algorithm (DAA) exhibits instability when the reward elasticity of the hash rate is high, implying that a sharp price reduction could disrupt the current Bitcoin system.
Shunya Noda +2 more
wiley +1 more source
Hyperchaotic hashing: a chaotic hash function based on 2D linear cross-coupled map with parallel feedback structure. [PDF]
Sci RepXing H, Min R, Li S, Yang Z, Yang Y.
europepmc +1 more source
Blockchain of Signature Material Combining Cryptographic Hash Function and DNA Steganography [PDF]
, 2019 Yixin Zhang
openalex +1 more source
Cryptocurrency Bubbles and Costly Mining
International Economic Review, EarlyView.ABSTRACT This paper develops a model of a cryptocurrency by incorporating mining into the otherwise standard search‐theoretic monetary framework. As usual, multiple equilibria exist. To obtain a sharp prediction on whether a cryptocurrency' s value will last in the future, I propose a notion of equilibrium refinement based on the feature that mining ...
Kohei Iwasaki
wiley +1 more source
Blockchain for video watermarking: An enhanced copyright protection approach for video forensics based on perceptual hash function. [PDF]
PLoS OneDarwish SM, Abu-Deif MM, Elkaffas SM.
europepmc +1 more source
Miners' Reward Elasticity and Stability of Competing Proof‐of‐Work Cryptocurrencies
International Economic Review, EarlyView.ABSTRACT Proof‐of‐Work cryptocurrencies employ miners to sustain the system through algorithmic reward adjustments. We develop a stochastic model of the multicurrency mining and identify conditions for stable transaction speeds. Bitcoin's algorithm requires hash supply elasticity <$<$1 for stability, while ASERT remains stable for any elasticity and ...
Kohei Kawaguchi +2 more
wiley +1 more source
BestCRM: An Exhaustive Search for Optimal Cis-Regulatory Modules in Promoters Accelerated by the Multidimensional Hash Function. [PDF]
Int J Mol SciDeyneko IV.
europepmc +1 more source
A 2D Cryptographic Hash Function Incorporating Homomorphic Encryption for Secure Digital Signatures [PDF]
Akshay Wali +2 more
openalex +1 more source